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- 10-1
/etc/fail2ban/jail.local
[sshd] # To use more aggressive sshd modes set filter parameter "mode" in jail.local: # normal (default), ddos, extra or aggressive (combines all). # See "tests/files/logs/sshd" or "filter.d/sshd.conf" for usage example and details. #mode = normal sshd_backend = systemd enabled = true port = ssh logpath = %(sshd_log)s backend = %(sshd_backend)s
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root@10-35-191-118:/etc/fail2ban# systemctl status fail2ban × fail2ban.service - Fail2Ban Service Loaded: loaded (/lib/systemd/system/fail2ban.service; enabled; preset: enabled) Active: failed (Result: exit-code) since Fri 2024-12-27 09:26:22 +08; 3s ago Duration: 100ms Docs: man:fail2ban(1) Process: 12125 ExecStart=/usr/bin/fail2ban-server -xf start (code=exited, status=255/EXCEPTION) Main PID: 12125 (code=exited, status=255/EXCEPTION) CPU: 95ms Dec 27 09:26:22 10-35-191-118 systemd[1]: Started fail2ban.service - Fail2Ban Service. Dec 27 09:26:22 10-35-191-118 fail2ban-server[12125]: 2024-12-27 09:26:22,251 fail2ban.configreader [12125]: WARNING 'allowipv6' not defined in 'Definition'. Using default one: 'auto' Dec 27 09:26:22 10-35-191-118 fail2ban-server[12125]: 2024-12-27 09:26:22,259 fail2ban [12125]: ERROR Failed during configuration: Have not found any log file for sshd jail Dec 27 09:26:22 10-35-191-118 fail2ban-server[12125]: 2024-12-27 09:26:22,264 fail2ban [12125]: ERROR Async configuration of server failed Dec 27 09:26:22 10-35-191-118 systemd[1]: fail2ban.service: Main process exited, code=exited, status=255/EXCEPTION Dec 27 09:26:22 10-35-191-118 systemd[1]: fail2ban.service: Failed with result 'exit-code'.